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Specified Facilities <br />Facility Status <br />Leach facilities, or heap leach pad <br />Not Present <br />Tailings storage or disposal areas <br />Not Present <br />Impoundments <br />Not Present <br />Waste rock piles (development rock stockpiles) <br />Present <br />Stock piles, temporary or permanent <br />Present <br />Land application sites <br />Not Present <br />2.0 Potential for Adverse Impacts <br />HRMMR § 6.4.20(1) provides for evaluation of potential adverse impacts associated <br />with designated chemicals, toxic- or acid - forming materials, or acid rock drainage at <br />mine facilities. This section identifies facilities present at the Sunday Group Mines in <br />relation to the requirements of HRMMR § 6.4.20(1), and presents general discussion <br />regarding the potential for these facilities to contain designated chemicals, toxic- or <br />acid - forming materials, or acid rock drainage. <br />2.1 Description of Specified Mine Facilities <br />HRMMR § 6.4.20(1)(c) sets forth various types of mine facilities that require specific <br />evaluation for the presence of designated chemicals and acid- or toxic - forming <br />materials. Exhibit 2 -1 describes the types of specified facilities that are present at the <br />Sunday Mines Group in relation to HRMMR § 6.4.20(1)(c): <br />Exhibit 2 -1. Summary of the Status of Saecified Facilities at the Sunday Mines Grou <br />Only development rock stockpiles are present at the Sunday Mines Group. These <br />stockpiles are comprised primarily of Top Rim sandstone. It is commonly medium <br />grained, well rounded, gray sandstone with calcite cement. The grain size of the rock <br />particles ranges from fine sand to boulders. The medium diameter is approximately 2 <br />inches based on a general visual evaluation. Local zones also contain reddish -brown <br />calcareous sandstone, which was mined from units adjacent to the Top Rim <br />sandstone. During mine operations there are also temporary ore stockpiles consisting <br />of similar Top Rim sandstone material. However, since June 2009, the mine has been <br />under temporary cessation status and there are currently no temporary ore stockpiles <br />at the mine. <br />Development rock is rock that must be excavated to facilitate mine development, but <br />that does not contain adequate metals content to constitute ore. Development rock <br />piles are located at each of the individual mines that compose the Sunday Mines <br />Group. Ore is rock that contains sufficient uranium and vanadium to warrant <br />processing at the Denison mill near Blanding, Utah. Temporary ore stockpiles are <br />currently located at the Sunday, St. Jude, West Sunday, and Topaz mines; the <br />temporary stockpiles are typically transported to the mill on a daily to weekly basis. <br />Exhibit 2 -2 describes the type, status and size of specific facilities at each mine within <br />the Sunday Mines Group. <br />C \ Users \cwoodward Oesktop \Sundays \FINAL - Environmental Protection Plan Sunday Mines Revised January 2072 deco <br />2 -1 <br />